Bluetooth Low Energy (Bluetooth Smart) to RS-485 Gateway
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Modbus is an application protocol for serial data transmission that often uses RS-485 for serial data transfer. This reference design implements a gateway between Modbus and the Bluetooth® Smart CC2540 wireless MCU. It serves as a replacement for wires in an RS-485 network, and it allows another Bluetooth® Smart-compatible device like a computer or smartphone to easily connect to an existing RS-485 network.

  • Implements wireless connection to industrial electronic devices with the CC2540T Bluetooth Smart Gateway solution graded up to 125°C
  • Simple and "ready to go" design shortens time to market
  • Android app (ModbusController) provided to enable control and communication with Modbus peripheral software
  • This design is tested and includes firmware, GUI, demo and user guide

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Design Files

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC2540T  Extended industrial temperature Bluetooth® Low Energy (LE) wireless MCU  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
SN65HVD485E  Half-Duplex RS-485 Transceiver  Interface  Sample & Buy View Design Kits & Evaluation Modules
TPS769  100-mA, 10-V, low-IQ, low-dropout voltage regulator with enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC2540T Download
SN65HVD485E Download Download
Download Download
Download Download
TPS769 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 3413 18 Feb 2014
Design files (3)
Title Type Size (KB) Date
ZIP 850 17 Oct 2014
PDF 215 17 Oct 2014
PDF 35 17 Oct 2014
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